The number of pairs of integers satisfying the inequality is:
The number of pairs of integers satisfying the inequality is:
Entered answer:
Solution
✅ Correct Answer: 85
or
|x-5| + |y-5| ≤ 6
For the inequality
|x-a| + |y-b| ≤ n,
the number of integral lattice points is
N = 2n² + 2n + 1
Putting n = 6,
N = 2(6)² + 2(6) + 1
= 72 + 12 + 1
= 85
Hence, the number of pairs is 85.
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